What is Bacteriostatic Water?
Bacteriostatic Water (0.9% benzyl alcohol sterile reconstitution solution) is a Sterile water + 0.9% benzyl alcohol. Sterile water for injection containing 0.9% benzyl alcohol as bacteriostatic preservative. Safe for repeated multi-use vial puncture — benzyl alcohol inhibits bacterial growth between uses. The standard reconstitution diluent for lyophilized research peptides stored beyond same-day use.
Research Applications
Peptide Reconstitution
Standard diluent for lyophilized research peptide stock solutions
Multi-Use Vials
Bacteriostatic preservation — safe for repeated vial puncture
Stock Solutions
Stable peptide stocks at 1–5mg/mL for research protocol use
Cold Chain Compatibility
Compatible with refrigerated storage of reconstituted peptides
Quick Specs
| Form |
H₂O |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
7732-18-5 (Water) |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
Refer to manufacturer labeling (typically 24–36 mo |
| Storage |
-20°C sealed | 2–8°C reconstituted (2–4 weeks) |
| Manufacture |
In-house Fmoc SPPS — Qingdao, China |
| Brand |
Asia |
Frequently Asked Questions
How do I reconstitute this peptide?
QSC Bacteriostatic Water is supplied as a sterile, multi-dose aqueous solution containing 0.9% benzyl alcohol as a bacteriostatic agent. Each vial is ready-to-use for peptide and protein reconstitution — no preparation required. Draw using a sterile syringe and needle under aseptic conditions.
How should this peptide be stored?
Store at room temperature (15–25°C) before opening. After first use, store at 2–8°C. Multi-dose vials are stable for 28 days after opening with benzyl alcohol preservation. Protect from light; do not freeze.
What purity is this QSC compound and how is it verified?
Bacteriostatic Water contains 0.9% benzyl alcohol which inhibits microbial growth, allowing multiple withdrawals from a single vial over 28 days. Sterile Water for Injection is preservative-free and intended for single use only. Bacteriostatic Water is the preferred reconstitution vehicle for research peptides and proteins requiring multiple doses.
🧪 Peptide Research Tools: Use QSC's free
peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
-20°C sealed | 2–8°C reconstituted (2–4 weeks)
